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| author | G. Branden Robinson <g.branden.robinson@gmail.com> | 2022-06-09 16:45:42 -0500 |
|---|---|---|
| committer | G. Branden Robinson <g.branden.robinson@gmail.com> | 2022-06-09 19:33:52 -0500 |
| commit | 31f64af693b077b846ac2540f4ea2baf95c4ef10 (patch) | |
| tree | 4310ecab007e8ba25e94fd71a9f60c04190be45f /m4 | |
| parent | 04195f7e5d60c79bb6bf1a40b929a66aa8885ace (diff) | |
| download | groff-git-31f64af693b077b846ac2540f4ea2baf95c4ef10.tar.gz | |
Weaken build dependency on TeX.
[build]: Weaken dependency on TeX, instead using it (to generate the DVI
and PDF forms of our Texinfo manual) only if it is available.
* m4/groff.m4 (GROFF_USE_TEX_CHECK): Check for presence of 'tex'
executable in path. Set shell variable `groff_use_tex` to "yes" if
present, and "no" otherwise. This check runs only if the 'makeinfo'
and 'texi2dvi' version checks have already passed.
* configure.ac: Run the new check. Set Automake conditional `USE_TEX`
only if shell variable `groff_use_tex` is "yes". Report whether
"groff.dvi" and "groff.pdf" are (re-)buildable.
* doc/doc.am: Parameterize names of groff.{dvi,pdf} targets as Make
macros `GROFF_DVI` and `GROFF_PDF`. Define them only if `USE_TEX`.
Do _not_ update `EXTRA_DIST` macro; leave the literal file names there
because we require that distribution archives contain these files.
(.texi.dvi, .texi.pdf): Update suffix rules to check `USE_TEX` and
fail, complaining of missing 'tex' program, if these targets are
attempted without it being true. Only manually specifying the file
names as targets to 'make' or attempting to generate a distribution
archive without TeX present should cause these errors.
* INSTALL.REPO: Update dependency information.
Fixes <https://savannah.gnu.org/bugs/?62592>. Thanks to Deri James for
the report.
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/groff.m4 | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/m4/groff.m4 b/m4/groff.m4 index a72acb5f4..8740ce10c 100644 --- a/m4/groff.m4 +++ b/m4/groff.m4 @@ -161,6 +161,16 @@ AC_DEFUN([GROFF_PROG_TEXI2DVI], [ fi ]) +# 'texi2dvi' can be installed without TeX itself, so check for a 'tex' +# executable independently. + +AC_DEFUN([GROFF_USE_TEX_CHECK], [ + AC_REQUIRE([GROFF_PROG_TEXI2DVI]) + AC_CHECK_PROG([PROG_TEX], [tex], [found], [missing]) + groff_use_tex=no + test "$PROG_TEX" = found && groff_use_tex=yes +]) + # grohtml needs the following programs to produce images from tbl(1) # tables and eqn(1) equations. |